28860602661 has 24 divisors (see below), whose sum is σ = 45486255360. Its totient is φ = 17487835200.

The previous prime is 28860602657. The next prime is 28860602677. The reversal of 28860602661 is 16620606882.

It is not a de Polignac number, because 28860602661 - 2² = 28860602657 is a prime.

It is a super-2 number, since 2×28860602661² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28860602461) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 532620 + ... + 584298.

It is an arithmetic number, because the mean of its divisors is an integer number (1895260640).

Almost surely, 2^28860602661 is an apocalyptic number.

It is an amenable number.

28860602661 is a deficient number, since it is larger than the sum of its proper divisors (16625652699).

28860602661 is a wasteful number, since it uses less digits than its factorization.

28860602661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57337 (or 57334 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 28860602661 in words is "twenty-eight billion, eight hundred sixty million, six hundred two thousand, six hundred sixty-one".